I love the colors LED's bring out. I'm hoping this works out!
I love the colors LED's bring out. I'm hoping this works out!
CR Member
I guess i didnt really switch but I am using LEDS now. Some of the stuff came out of my 75g T5 and is now under the LEDs. I have had a crocea clam for over 4 years and it has been under MH and T5 always unhappy unless it was within 10" from the source of the light. I tried to get it to the same distance and it wouldnt open. I thought flow was bugging it so I shut off or directed flow away from it didnt help. I put it at the bottom of the tank 30" away from the source of the light and it opened right up. Same with most of my lps quite happy at the bottom or off center a bit.
"The beatings will continue until morale improves."
Just FYI. Air itself has a very little effect on par because light travels thru are without much "pollution of medium" as I am calling it. The distance itself matters because as you get farther from the it spreads out and is not as bright (flashlight effect). The light is being spread over wider area. If you some narrow beam optic, you actually can put light quit far away from tank. These are some of the setups that people have on open top tanks with LED away from tank 3 plus feet! I have read quite a bit about LEDS and I will definately be working on a system next month when I have more time.
Paulo
thank you paulo, maybe someone will believe youOriginally Posted by Paulo
It takes a long long time to build a coral reef. Step by step the reefs survive on partnerships. And the most important partners are you and I.
Basically you do not lose much energy in air. You lose much more in water. Depth in water make a great difference. In air what happens is that the energy "leaks" out side of tank when it is moved higher. So it has an effect but not as much as one may think especially depending on which optics you use. To go Bill Nye on you all it has to do with density of media. A gas has low density. This means fewer atoms per volume. So light energy passes true without losing much energy. Water much denser (plus "polluted" with solids that block light) as light energy travels thru it it take a pretty good hit. Distance in air has an effect on par, but not near the effect that distance in water has on par.
I have been using LED since day one on my tank. The only thing I noted is that SPS really needs to be acclimated to the LED. Whenever I get a frag, it goes to the sand bed and is slowly raised over the course of a week or so. I browned out a good piece I picked up at the Lansing swap last year by not acclimating properly. I have also reduced the photoperiod slightly when acclimating new corals. I just got a bunch of new SPS frags, so I'll have more info soon.
That wasn't very nice to say~could you be any more rude
Miz, dont think it was meant to be rude. I think Red is saying that it is hard to explain to people that moving LEDs up has a lot less effect on decreasing par. This because optics focus light into a tighter beam than you can with MH or T5. Better focus of light, means less spillage out sides of tank. The biggest thing about led is the par loss is very much in air. The main loss of par in air is losses thru sides of tank. I'm sure some one out there willl tell me I'm full of poop but Red was not lol.
Guess I don't understand. My apology Redemer
What did you do when you changed out your lights?
Hi my name is Larry and I'm a coral addict!
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